Table 2.

Final regression model for quantitative checklist for autism in toddlers (Q-CHAT) scores

Outcome	Predictors	Final regression model
		R2	Δ R2	B	SE	β	P
Group
Q-CHAT Score	Gestational age	0.02	0.02	0.47	0.32	0.12	> 0.05
	FT level	0.18	0.16	7.32	1.53	0.4	< 0.001
Girls only
Q-CHAT Score	FT level	0.1	0.1	8.97	3.5	0.31	< 0.05
Boys only
Q-CHAT Score	Gestational age	0.07	0.07	0.75	0.43	0.21	> 0.05
	Child age			0.1	0.57	0.02	> 0.05
	FT level	0.21	0.14	7.36	2.38	0.37	< 0.01